US20200173536A1 - Lubrication system for rack and pinion mast - Google Patents
Lubrication system for rack and pinion mast Download PDFInfo
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- US20200173536A1 US20200173536A1 US16/783,820 US202016783820A US2020173536A1 US 20200173536 A1 US20200173536 A1 US 20200173536A1 US 202016783820 A US202016783820 A US 202016783820A US 2020173536 A1 US2020173536 A1 US 2020173536A1
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- United States
- Prior art keywords
- lubricant
- pinion
- lubricating
- lubrication system
- dispensing port
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
- F16H57/0431—Means for guiding lubricant directly onto a tooth surface or to foot areas of a gear, e.g. by holes or grooves in a tooth flank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0441—Arrangements of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
Definitions
- the present disclosure relates in general to drilling rigs, and in particular to a drilling rig employing a carriage movable along racks.
- Drilling rigs typically include one or more hoisting apparatuses.
- the hoisting apparatus may be a carriage movable along a vertical mast.
- the carriage may include one or more motors which turn pinions in engagement with racks positioned on the mast to move the carriage vertically.
- An embodiment of the present disclosure is directed to a lubrication system for a carriage movable along a mast having a rack.
- the lubrication system includes a lubricating pinion, the lubricating pinion mechanically coupled to the carriage and in engagement with the rack.
- the lubricating pinion includes a lubricant dispensing port.
- the lubricant dispensing port is formed on a face of a tooth of the lubricating pinion.
- the lubrication system also includes a lubricant reservoir and a pump to pump lubricant from the lubricant reservoir to the lubricant dispensing port.
- the method includes providing a mast, the mast having a rack.
- the method also includes mechanically coupling a carriage to the mast such that the carriage is movable relative to the mast.
- the carriage includes a lubrication system.
- the lubrication system includes a lubricating pinion, the lubricating pinion mechanically coupled to the carriage and in engagement with the rack.
- the lubricating pinion includes a lubricant dispensing port, the lubricant dispensing port formed on a face of a tooth of the lubricating pinion.
- the lubrication system also includes a lubricant reservoir and a pump to pump lubricant from the lubricant reservoir to the lubricant dispensing port.
- the method includes pumping lubricant from the lubricant reservoir to the lubricating pinion and dispensing lubricant from the lubricant dispensing port.
- FIG. 2 depicts a schematic view of a lubrication system consistent with at least one embodiment of the present disclosure
- FIG. 3 depicts a perspective view of a lubricating pinion used in a lubrication system consistent with at least one embodiment of the present disclosure.
- FIG. 4 depicts a cross section view of the lubricating pinion of FIG. 2 .
- FIG. 5 depicts a cross section view of the lubricating pinion of FIG. 2 .
- drilling rig 10 may include mast 15 .
- Mast 15 may include racks 20 mechanically coupled thereto.
- Carriage 25 may include one or more drive pinions that engage with racks 20 .
- the drive pinions may be powered by one or more motors including, for example and without limitation, electric or hydraulic motors. Rotation of the drive pistons may cause carriage 25 to move vertically along mast 15 .
- Carriage 25 may be mechanically coupled to mast 15 in any suitable way known in the art without deviating from the scope of this disclosure.
- carriage 25 may include lubrication system 100 .
- Lubrication system 100 may include one or more lubricating pinions 101 .
- Lubricating pinions 101 engaged with racks 20 such that lubricating pinions 101 rotate as carriage 25 moves vertically along mast 15 .
- Lubricating pinions 101 may, as discussed further herein below, dispense grease or other lubricant onto racks 20 .
- lubrication system 100 may include pump 103 .
- Pump 103 may pump lubricant 105 from lubricant reservoir 107 through lubricant supply line 109 to manifold 111 .
- Pump 103 may be a rotary driven hydraulic pump, reciprocating piston pump, or, as would be appreciated by one having ordinary skill in the art with the benefit of this disclosure, any pump capable of pumping the selected lubricant 105 through lubrication system 100 .
- Lubricant 105 may in some embodiments be grease.
- manifold 111 may couple lubricant supply line 109 to lubricating pinions 101 via pinion supply lines 113 , allowing flow of lubricant 105 to lubricating pinions 101 .
- one or more valves 112 may be positioned between manifold 111 and pinion supply lines 113 , allowing flow of lubricant 105 to lubricating pinions 101 to be regulated as discussed further herein below.
- valves 112 may be controlled by controller 115 .
- valves 112 may be, for example and without limitation, ejectors.
- controller 115 may control pump 103 to regulate flow of lubricant 105 to lubricating pinions 101 . In some embodiments, controller 115 may control the flow of lubricant 105 by turning on or off pump 103 . In some embodiments, controller 115 may control a pumping rate of pump 103 . In some embodiments, controller 115 may open or close valves 112 to permit or restrict flow of lubricant 105 . In some embodiments, controller 115 may partially open valves 112 to control the flow rate of lubricant 105 . In some embodiments, controller 115 may be controlled or adjusted remotely, such as, for example and without limitation, from a drill chair.
- lubrication system 100 may provide a continuous flow of lubricant 105 to lubricating pinions 101 .
- a discontinuous flow of lubricant 105 may be supplied to lubricating pinions 101 .
- lubricant 105 may be supplied to lubricating pinions 101 at a preset interval or in response to operator input.
- controller 115 may regulate the supply of lubricant 105 to lubricating pinions 101 based on operations of drilling rig 10 .
- lubricant 105 may be supplied to lubricating pinions 101 when carriage 25 is in motion.
- lubricant 105 may be supplied to lubricating pinions 101 when carriage 25 is moving downward, moving upward, or when carriage 25 is moving either downward or upward.
- each lubricating pinion 101 may be mechanically coupled to frame 117 .
- Frame 117 may mechanically couple to carriage 25 to support lubricating pinion 101 in engagement with rack 20 .
- each lubricating pinion 101 may include one or more lubricant dispensing ports 119 .
- Lubricant dispensing ports 119 may be formed on teeth 121 of lubricating pinion 101 .
- one or more lubricant dispensing ports 119 may be formed on each face 123 of each tooth 121 .
- Lubricant dispensing ports 119 may be positioned on teeth 121 along the path of contact between teeth 121 and rack 20 .
- lubricant dispensing ports 119 may be positioned along the pitch circle of lubricating pinion 101 .
- Pitch circle signifies the imaginary circle of lubricating pinion 101 which would rotate without slip as lubricating pinion 101 moves along rack 20 .
- each lubricant dispensing port 119 may be fluidly coupled to a respective lubricant port 125 .
- Each lubricant port 125 may extend radially inward toward inner hub 127 of lubricating pinion 101 .
- inner hub 127 may include inner bore 129 .
- Inner bore 129 may be fluidly coupled to pinion supply line 113 .
- inner bore 129 may be in fluid communication with lubricant reservoir 107 when lubricant 105 is supplied to lubricating pinion 101 .
- inner bore 129 may be fluidly coupled to lubricant fitting 131 .
- inner hub 127 of lubricating pinion 101 may remain stationary with respect to frame 117 .
- teeth 121 may be formed on pinion outer body 133 which may rotate freely relative to inner hub 127 .
- one or more bearings 135 may be positioned between inner hub 127 and pinion outer body 133 .
- inner hub 127 may include radial dispensing port 137 .
- Radial dispensing port 137 may be fluidly coupled to inner bore 129 and may radially extend from inner bore 129 to an outer surface of inner hub 127 .
- Radial dispensing port 137 may be oriented such that as pinion outer body 133 is rotated, a lubricant port 125 may come into alignment with radial dispensing port 137 , allowing fluid communication between inner bore 129 and lubricant dispensing ports 119 coupled to the lubricant port 125 .
- Radial dispensing port 137 may, in some embodiments, be oriented relative to carriage 25 such that lubricant 105 is dispensed by lubricant dispensing ports 119 when they are in a desired relative orientation to rack 20 .
- radial dispensing port 137 may be formed such that radial dispensing port 137 extends in the direction of rack 20 , such that lubricant 105 is dispensed to lubricant port 125 associated with lubricant dispensing ports 119 of tooth 121 engaged with rack 20 .
- one or more seals 139 may be positioned between inner hub 127 and pinion outer body 133 to, for example and without limitation, reduce or restrict lubricant 105 from flowing to lubricant ports 125 not aligned with radial dispensing port 137 .
- pinion outer body 133 may be formed from one or more subcomponents.
- pinion outer body 133 may be formed from subcomponents core 141 and one or more spreaders 143 .
- Core 141 may, in some embodiments, be formed from a rigid material and may house lubricant dispensing ports 119 and lubricant ports 125 as described herein above.
- core 141 may be formed from a rigid material such as aluminum or steel.
- spreaders 143 may be formed from a conformable material such as rubber or foam.
- Spreaders 143 may, in some embodiments, spread lubricant 105 dispensed from lubricant dispensing ports 119 of core 141 across face 123 of tooth 121 . Although depicted as including a single core 141 and two spreaders 143 , one having ordinary skill in the art with the benefit of this disclosure will understand that any number of cores 141 and spreaders 143 may be utilized in lubricating pinion 101 .
Abstract
A lubrication system for a rack and pinion mast of a drilling rig includes a lubricating pinion positioned on a cart and in engagement with the rack. The lubricating pinion includes a plurality of lubrication dispensing ports formed on faces of the teeth of the pinion. The lubrication dispensing ports are fluidly coupled to lubrication ports formed in the lubricating pinion. The lubrication ports fluidly couple to an inner bore of the lubricating pinion. The inner bore may be fluidly coupled to a lubricant reservoir.
Description
- This application is divisional application which claims priority from U.S. utility application Ser. No. 15/603,954, filed May 24, 2017, with is itself a non-provisional application which claims priority from U.S. provisional application No. 62/341,117, filed May 25, 2016, each of which is incorporated by reference herein in its entirety.
- The present disclosure relates in general to drilling rigs, and in particular to a drilling rig employing a carriage movable along racks.
- Drilling rigs typically include one or more hoisting apparatuses. In some drilling rigs, the hoisting apparatus may be a carriage movable along a vertical mast. The carriage may include one or more motors which turn pinions in engagement with racks positioned on the mast to move the carriage vertically.
- An embodiment of the present disclosure is directed to a lubrication system for a carriage movable along a mast having a rack. The lubrication system includes a lubricating pinion, the lubricating pinion mechanically coupled to the carriage and in engagement with the rack. The lubricating pinion includes a lubricant dispensing port. The lubricant dispensing port is formed on a face of a tooth of the lubricating pinion. The lubrication system also includes a lubricant reservoir and a pump to pump lubricant from the lubricant reservoir to the lubricant dispensing port.
- Another embodiment of the present disclosure is directed to a method. The method includes providing a mast, the mast having a rack. The method also includes mechanically coupling a carriage to the mast such that the carriage is movable relative to the mast. The carriage includes a lubrication system. The lubrication system includes a lubricating pinion, the lubricating pinion mechanically coupled to the carriage and in engagement with the rack. The lubricating pinion includes a lubricant dispensing port, the lubricant dispensing port formed on a face of a tooth of the lubricating pinion. The lubrication system also includes a lubricant reservoir and a pump to pump lubricant from the lubricant reservoir to the lubricant dispensing port. The method includes pumping lubricant from the lubricant reservoir to the lubricating pinion and dispensing lubricant from the lubricant dispensing port.
- The present disclosure is best understood from the following detailed description when read with the accompanying figures. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion.
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FIG. 1 depicts a lubrication system consistent with at least one embodiment of the present disclosure. -
FIG. 2 depicts a schematic view of a lubrication system consistent with at least one embodiment of the present disclosure -
FIG. 3 depicts a perspective view of a lubricating pinion used in a lubrication system consistent with at least one embodiment of the present disclosure. -
FIG. 4 depicts a cross section view of the lubricating pinion ofFIG. 2 . -
FIG. 5 depicts a cross section view of the lubricating pinion ofFIG. 2 . - It is to be understood that the following disclosure provides many different embodiments, or examples, for implementing different features of various embodiments. Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to be limiting. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
- As depicted in
FIG. 1 , drilling rig 10 may includemast 15.Mast 15 may includeracks 20 mechanically coupled thereto. Carriage 25 may include one or more drive pinions that engage withracks 20. The drive pinions may be powered by one or more motors including, for example and without limitation, electric or hydraulic motors. Rotation of the drive pistons may causecarriage 25 to move vertically alongmast 15.Carriage 25 may be mechanically coupled tomast 15 in any suitable way known in the art without deviating from the scope of this disclosure. - In some embodiments,
carriage 25 may includelubrication system 100.Lubrication system 100 may include one or more lubricatingpinions 101. Lubricatingpinions 101 engaged withracks 20 such that lubricatingpinions 101 rotate ascarriage 25 moves vertically alongmast 15. Lubricatingpinions 101 may, as discussed further herein below, dispense grease or other lubricant ontoracks 20. - In some embodiments, as depicted in
FIG. 2 ,lubrication system 100 may includepump 103.Pump 103 maypump lubricant 105 fromlubricant reservoir 107 throughlubricant supply line 109 to manifold 111.Pump 103 may be a rotary driven hydraulic pump, reciprocating piston pump, or, as would be appreciated by one having ordinary skill in the art with the benefit of this disclosure, any pump capable of pumping theselected lubricant 105 throughlubrication system 100. Lubricant 105 may in some embodiments be grease. In some embodiments,manifold 111 may couplelubricant supply line 109 to lubricatingpinions 101 viapinion supply lines 113, allowing flow oflubricant 105 to lubricatingpinions 101. In some embodiments, one ormore valves 112 may be positioned betweenmanifold 111 andpinion supply lines 113, allowing flow oflubricant 105 to lubricatingpinions 101 to be regulated as discussed further herein below. In some embodiments,valves 112 may be controlled bycontroller 115. In some embodiments,valves 112 may be, for example and without limitation, ejectors. In some embodiments,controller 115 may controlpump 103 to regulate flow oflubricant 105 to lubricatingpinions 101. In some embodiments,controller 115 may control the flow oflubricant 105 by turning on or offpump 103. In some embodiments,controller 115 may control a pumping rate ofpump 103. In some embodiments,controller 115 may open orclose valves 112 to permit or restrict flow oflubricant 105. In some embodiments,controller 115 may partially openvalves 112 to control the flow rate oflubricant 105. In some embodiments,controller 115 may be controlled or adjusted remotely, such as, for example and without limitation, from a drill chair. - In some embodiments,
lubrication system 100 may provide a continuous flow oflubricant 105 to lubricatingpinions 101. In some embodiments, a discontinuous flow oflubricant 105 may be supplied to lubricatingpinions 101. For example and without limitation,lubricant 105 may be supplied to lubricatingpinions 101 at a preset interval or in response to operator input. In some embodiments,controller 115 may regulate the supply oflubricant 105 tolubricating pinions 101 based on operations of drilling rig 10. For example, in some embodiments,lubricant 105 may be supplied tolubricating pinions 101 whencarriage 25 is in motion. In some embodiments,lubricant 105 may be supplied tolubricating pinions 101 whencarriage 25 is moving downward, moving upward, or whencarriage 25 is moving either downward or upward. - In some embodiments, as depicted in
FIG. 3 , each lubricatingpinion 101 may be mechanically coupled toframe 117.Frame 117 may mechanically couple tocarriage 25 to support lubricatingpinion 101 in engagement withrack 20. - In some embodiments, each lubricating
pinion 101 may include one or morelubricant dispensing ports 119.Lubricant dispensing ports 119 may be formed onteeth 121 of lubricatingpinion 101. In some embodiments, one or morelubricant dispensing ports 119 may be formed on eachface 123 of eachtooth 121.Lubricant dispensing ports 119 may be positioned onteeth 121 along the path of contact betweenteeth 121 andrack 20. In some embodiments,lubricant dispensing ports 119 may be positioned along the pitch circle of lubricatingpinion 101. Pitch circle, as understood in the art, signifies the imaginary circle of lubricatingpinion 101 which would rotate without slip as lubricatingpinion 101 moves alongrack 20. - In some embodiments, as depicted in
FIG. 4 , eachlubricant dispensing port 119 may be fluidly coupled to arespective lubricant port 125. Eachlubricant port 125 may extend radially inward towardinner hub 127 of lubricatingpinion 101. - In some embodiments, with reference to
FIGS. 4, 5 ,inner hub 127 may includeinner bore 129.Inner bore 129 may be fluidly coupled topinion supply line 113. In some embodiments,inner bore 129 may be in fluid communication withlubricant reservoir 107 whenlubricant 105 is supplied to lubricatingpinion 101. In some embodiments,inner bore 129 may be fluidly coupled tolubricant fitting 131. In some embodiments,inner hub 127 of lubricatingpinion 101 may remain stationary with respect toframe 117. In some such embodiments,teeth 121 may be formed on pinionouter body 133 which may rotate freely relative toinner hub 127. In some embodiments, one ormore bearings 135 may be positioned betweeninner hub 127 and pinionouter body 133. - In some embodiments,
inner hub 127 may includeradial dispensing port 137. Radial dispensingport 137 may be fluidly coupled toinner bore 129 and may radially extend frominner bore 129 to an outer surface ofinner hub 127. Radial dispensingport 137 may be oriented such that as pinionouter body 133 is rotated, alubricant port 125 may come into alignment withradial dispensing port 137, allowing fluid communication betweeninner bore 129 andlubricant dispensing ports 119 coupled to thelubricant port 125. Radial dispensingport 137 may, in some embodiments, be oriented relative tocarriage 25 such thatlubricant 105 is dispensed bylubricant dispensing ports 119 when they are in a desired relative orientation to rack 20. For example and without limitation, in some embodiments,radial dispensing port 137 may be formed such thatradial dispensing port 137 extends in the direction ofrack 20, such thatlubricant 105 is dispensed tolubricant port 125 associated withlubricant dispensing ports 119 oftooth 121 engaged withrack 20. - In some embodiments, one or
more seals 139 may be positioned betweeninner hub 127 and pinionouter body 133 to, for example and without limitation, reduce or restrictlubricant 105 from flowing tolubricant ports 125 not aligned withradial dispensing port 137. - In some embodiments, pinion
outer body 133 may be formed from one or more subcomponents. For example and without limitation, in some embodiments, as depicted inFIG. 5 , pinionouter body 133 may be formed fromsubcomponents core 141 and one ormore spreaders 143.Core 141 may, in some embodiments, be formed from a rigid material and may houselubricant dispensing ports 119 andlubricant ports 125 as described herein above. In some embodiments,core 141 may be formed from a rigid material such as aluminum or steel. In some embodiments,spreaders 143 may be formed from a conformable material such as rubber or foam.Spreaders 143 may, in some embodiments, spreadlubricant 105 dispensed fromlubricant dispensing ports 119 ofcore 141 acrossface 123 oftooth 121. Although depicted as including asingle core 141 and twospreaders 143, one having ordinary skill in the art with the benefit of this disclosure will understand that any number ofcores 141 andspreaders 143 may be utilized in lubricatingpinion 101. - The foregoing outlines features of several embodiments so that a person of ordinary skill in the art may better understand the aspects of the present disclosure. Such features may be replaced by any one of numerous equivalent alternatives, only some of which are disclosed herein. One of ordinary skill in the art should appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. One of ordinary skill in the art should also realize that such equivalent constructions do not depart from the spirit and scope of the present disclosure and that they may make various changes, substitutions, and alterations herein without departing from the spirit and scope of the present disclosure.
Claims (8)
1. A lubrication system for a carriage movable along a mast having a rack comprising:
a lubricating pinion, the lubricating pinion mechanically coupled to the carriage and in engagement with the rack, the engagement between the pinion and rack defining a pitch circle of the lubricating pinion, the lubricating pinion including a lubricant dispensing port, the lubricant dispensing port formed on a face of a tooth of the lubricating pinion, the lubricant dispensing port positioned at a distal end of the tooth or positioned along the pitch circle, the lubricating piston including:
a core, the core formed from a rigid material, the lubricant dispensing port formed in the core; and
a spreader, the spreader formed from a conformable material;
a lubricant reservoir; and
a pump to pump lubricant from the lubricant reservoir to the lubricant dispensing port.
2. The lubrication system of claim 1 , wherein the lubricant dispensing port is fluidly coupled to a lubricant port formed in the lubricating pinion.
3. The lubrication system of claim 2 , wherein the lubricating pinion further comprises:
an inner hub, the inner hub including an inner bore in fluid communication with the lubricant reservoir and a radial dispensing port extending from the inner bore to an outer surface of the inner hub; and
a pinion outer body, the pinion outer body including the tooth, the lubricant dispensing port, and the lubricant port, the pinion outer body rotatable relative to the inner hub such that when the lubricant port is aligned with the radial dispensing port, the lubricant dispensing port is in fluid communication with the inner bore.
4. The lubrication system of claim 1 , wherein the core is formed from aluminum or steel.
5. The lubrication system of claim 1 , wherein the spreader is formed from rubber or foam.
6. The lubrication system of claim 1 , further comprising a valve between the pump and the lubricating pinion.
7. The lubrication system of claim 6 , further comprising a controller to control the valve.
8. The lubrication system of claim 1 , wherein the lubricating piston comprises a plurality of lubricant dispensing ports formed on a plurality of teeth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US16/783,820 US10837542B2 (en) | 2016-05-25 | 2020-02-06 | Lubrication system for rack and pinion mast |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201662341117P | 2016-05-25 | 2016-05-25 | |
US15/603,954 US10598270B2 (en) | 2016-05-25 | 2017-05-24 | Lubrication system for rack and pinion mast |
US16/783,820 US10837542B2 (en) | 2016-05-25 | 2020-02-06 | Lubrication system for rack and pinion mast |
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US15/603,954 Division US10598270B2 (en) | 2016-05-25 | 2017-05-24 | Lubrication system for rack and pinion mast |
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US20200173536A1 true US20200173536A1 (en) | 2020-06-04 |
US10837542B2 US10837542B2 (en) | 2020-11-17 |
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US15/603,954 Active 2038-02-17 US10598270B2 (en) | 2016-05-25 | 2017-05-24 | Lubrication system for rack and pinion mast |
US16/783,820 Active US10837542B2 (en) | 2016-05-25 | 2020-02-06 | Lubrication system for rack and pinion mast |
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US10598270B2 (en) * | 2016-05-25 | 2020-03-24 | Nabors Drilling Technologies Usa, Inc. | Lubrication system for rack and pinion mast |
CN110219974A (en) * | 2019-07-05 | 2019-09-10 | 青岛港国际股份有限公司 | The lubricating arrangement of horizontal rotation bull gear tooth post |
CN112303200B (en) * | 2020-11-23 | 2023-04-25 | 沈阳工程学院 | Transmission device of mechanical pump set of wind power gear box |
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2017
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2020
- 2020-02-06 US US16/783,820 patent/US10837542B2/en active Active
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US20170343097A1 (en) | 2017-11-30 |
US10837542B2 (en) | 2020-11-17 |
US10598270B2 (en) | 2020-03-24 |
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